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Posted to reviews@spark.apache.org by "grundprinzip (via GitHub)" <gi...@apache.org> on 2024/01/24 01:25:34 UTC
[PR] [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC [spark]
grundprinzip opened a new pull request, #42499:
URL: https://github.com/apache/spark/pull/42499
### What changes were proposed in this pull request?
This patch caches the result of the `df.schema` call in the DataFrame to avoid the extra roundtrip to the Spark Connect service to retrieve the columns or the schema. Since the Dataframe is immutable, the schema will not change.
### Why are the changes needed?
Performance / Stability
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Existing UT
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Re: [PR] [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC [spark]
Posted by "hvanhovell (via GitHub)" <gi...@apache.org>.
hvanhovell commented on PR #42499:
URL: https://github.com/apache/spark/pull/42499#issuecomment-1923736483
Merging to master.
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[GitHub] [spark] grundprinzip closed pull request #42499: [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC
Posted by "grundprinzip (via GitHub)" <gi...@apache.org>.
grundprinzip closed pull request #42499: [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC
URL: https://github.com/apache/spark/pull/42499
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Re: [PR] [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC [spark]
Posted by "hvanhovell (via GitHub)" <gi...@apache.org>.
hvanhovell closed pull request #42499: [SPARK-44815][CONNECT]Cache df.schema to avoid extra RPC
URL: https://github.com/apache/spark/pull/42499
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